| Value | Category | Cases | |
|---|---|---|---|
| -1 | missing | 0 |
0%
|
| 0 | none | 6879 |
12.9%
|
| 1 | some of them | 21665 |
40.5%
|
| 2 | most of them | 12357 |
23.1%
|
| 3 | all of them | 7705 |
14.4%
|
| 8 | refused | 276 |
0.5%
|
| 9 | don't know/ haven’t heard | 4562 |
8.5%
|